In charges filed Thursday, King County prosecutors claim Zimmerman had been brazenly sharing child pornography on Twitter for months. Zimmerman, a 43-year-old previously convicted of child molestation, is alleged to have drawn seven complaints to a national clearinghouse for information about child porn distributors.

Arrested Wednesday, Zimmerman is now charged with distribution of child pornography. Writing the court, Senior Deputy Prosecutor Cecelia Gregson described Zimmerman as a danger to the community.

“The defendant has an incredibly concerning conviction history for sexually assaulting multiple children at very young, vulnerable ages and has essentially crafted a child-sized rape doll,” Gregson said in charging papers.

“Even while seemingly compliant and living in our community, the defendant was covertly engaged in the promulgation and mass dissemination of horrific rape images of little boys and girls inciting others to partake in this deviant behavior and creating a market for the further abuse of our children,” she continued.

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The investigation into Zimmerman began in March after Twitter security employees reported seven concerning images to the National Center for Missing and Exploited Children. King County Sheriff’s Office investigators tracked the offending Twitter account to Zimmerman’s home, located in the 18400 block of 49th Avenue South in SeaTac.

Zimmerman had been convicted 19 years before on two counts of first-degree child molestation. He’d sexually assaulted a three-year-old child and a 10-year-old boy, and had registered as a sex offender because of the offenses. He appears to have been sentenced to 5 ½ years in prison.

Investigators obtained a search warrant for Zimmerman’s home, which they raided Wednesday. Zimmerman, who was arrested there, is alleged to have admitted to sending child pornography over Twitter.

“During the search of Zimmerman’s room, investigators found a toddler-sized stuffed girl doll wearing a dress,” a sheriff’s office detective said in court papers, noting that the crotch of the doll had been “ripped open.”

The detective went on to claim photos of children swimming at a pool were found on Zimmerman’s phone. A forensic examination of his electronics has not yet been completed.

Zimmerman has been charged with firs-degree distribution of child pornography. He remains jailed on $1 million bail.